Concrete wall mold



July 15, 1952. 1 E. O'SULLIVAN CONCRETE WALL. MOLD 2 SHEETS-SHEET l Fild Feb. 17, 1951 y 15, 1952 E. O'SULLIVAN CONCRETE WALL MOLD 2 SHEETS-SHEET 2 Filed Feb. 17 1951 V V //A f/////// W M H mm W mm Pm v I 5 Patented July 15, 1952 UNI-TED STATES PATENT OFFICE -(36NCRETE WAIEB'MOL'D Eugene (i -sulliven, G hislehuist," England apiili cafiilsgt ebiimy'17, 1951ffSe ii 1%; $13 ,468

-' In GreatBr'itain March c, 1950 -19b1aimsf (01. 25-131) 1 2 i invntiomrele-tes t o' 'moulds and is more between 'the ffrajme 'ofthe mould an :thefifiouid particularly concerned with the'types-o'f'mould plates; Such-catches, however;--sufier-. t

which are employed in the construction of bui1d disadvantage thwttheyhavetoibe Operate'dmanngsin situ 'or fox-making building'hlocksusing ually to engage or release*theinrwhichmegjexsiconcrete or other instteria1f w1'iichfis capable of being "cast-in a mould. A11=st ch materials are fort; Furthermore;such"ctchesinvolve to beconsidere dasbeingcomprised within-the of small moving pa-rts'w-hich are liable t 45eterin concrete tvhich'wv'fll'be'used hereinafter come blocke'd withcohcreiteor'dirt. for tne sa-icejo convenience. It is one of the objects ofthe-present such purposes-moulds are-knownwhich '1 to provid'e a mouidh'aving-at-ieastone mild comprise al ffame-stmctu're and a pair of side plate which is movable flaetweenanfinnemnouldmvab1-y c5md by the ing positiorY-and amiouteripositiomangi hioh is M I 4 (W mefflj gt e a ifm providedwith:nov'el'and'iniprovednfeans orineinonlding position and an outer position to-pertaming the mo d pl ate S' 'mcul mgm'ositio nfiit'iof tf e 'ffioiild beinregdily removed from-a fA fufl'Ih-er object-ofthefinventionis jthgefiprci moiil decl block-pi' section 'of-'-we11 without damvision of su'ch a mould havin'g'imeans forretaine'ig'ingflit chasm concrefie isstill soft. In one ing the or each'mouldplam:in itsFm'ouidingpos'ikr w Li l nb -s i iid' m uld plate is tion',which means are'automatic-tin theirofierasilpg qrted 'byfbwbiTSdf1iIikWhih are pivo tally tion so that'iitis not necessary for the "workman c'onnectefl at" th i ag -with the "mollfld 2o c ry out-any additional-operat ons to-zieaee plate and attlo efiofit TeniiS 'WiL-H th fram of or release the"iretai'riiny'ineahswhen opening 62' the i'fioiild sd that filaitecanliemoved closing th mouldi .7 beween n'e iower' mouldin position Yet another objectoftheinvntionyis th'eiaroand an i'gbi ex anddute p0 tin'in which-it is vision of s'uch' armouTd Lin whichwth e: clerolf'the mo'iiliiefl lock- 31' means compri-se1apairfofmoopeiaiting one of which isinounted oh andeiszoperajte' movement ofthmoulwplate anqythe which 'is fixedly fmountd the mime s;*which"tops' mouldi H I rangedthavwhe fthepl tes'ie Hen o'uid- 3'0 rallyspeaking; atmoulcrwmcn isgdesigned mg" positions tiiesuiiifibit-irig iifik'saie iibstritialforming i I "m i --buil iinggplgoks 1 "fibfi o t -fl will include twovside plates iwhichere {wronged Asa result oft'h'is" arr zigefire'nt *afi' internal ytr Mwem; 'p herrafid fie? press re actin n r l-1 -ggin t tf m faces which is movable between an inner moulding npos'io themoifld"filates' acts 'elofi" T hfifthe tionand u riposition M Iinks'without *produ'cih' eny turr'iii ig moment on ItviS -ly. a further gobiect or gins inthe latter WhicHwofldtenwto cause the mould ventim toprovid a rmquld m ai b mates tb' move opwjrdiyiwayirdmthir 'mdulaaiid o dkplates-a e p vide h means ing' -posi tions.- Tb opmhe-momd Q'Biietfup- Hamming themiirr-isheir-mbulding PO #10118.-

ward or-lifting fOTcemiist-be QbbIied totheinould each of which means comprises a ria i 1 op rmatea ati ng in'e xnpers;"onermonntedpr thefinp opiate j oints result T in mould. 1312329" he; i ttl'e play or freedom:of movementcin' the :mmm "nd tion. Furthermore, the plate and the members supporting it possess at least a small amount of flexibility or resiliency. As a result of these two factors, when the mould is full the pressure of the concrete in it will tend to force the mould plate outwardly as far as is permitted by its connection with the frame and will also tend to flex the plate itself in an outward direction where it is not directly supported. On the other hand, when the mould is empty the mould plate will be unfiexed, while it will also be free to move inwardly by the small amount allowed by the working clearances. It is primarily these small movements which are utilised in carrying out the present invention, it being understood, however, that if necessary the construction of the mould may be modified in order to increase the amount of movement permitted.

For the better understanding of the invention two embodiments thereof will now be more fully described, by way of example. Reference will be had to the accompanying drawings, in which:

Figure l is a perspective view of a, mould embodying the invention;

Figure 2 is a detail sectional view, to a larger scale, showing one of the retaining means provided in the mould of Figure 1;

Figure 3 is a diagram illustrating the operation of the retaining means;

Figure 4 is a view similar to Figure 2 but showing a modified form of retaining means.

Referring first to Figures 1 and 2, the drawings show a mould which is pertioularly designed and intended for use in building hollow or cavity walls in situ. This mould comprises a frame structure which consists of two end frame members I each of which includes an upper cross part 2, a pair of outer depending legs 3 and a depending central leg 4. The end frames l are connected together to form a rigid frame structure by means of two pairs of longitudinal rods the ends of which are secured to the legs 3 by means of nuts 6.

The mould includes a pair of side mould plates 1 which are mounted on the longitudinal rods 5 by means of links 8, the inner ends of which are pivotally connected to lugs 9 on the plates 1 and the outer ends of which are rigidly secured to tubes II] which "are rotatably mounted on the rods 5. As a result of this arrangement each mould plate! is movable between an inner moulding position as shown, in which the links 8 are substantially horizontal and perpendicular to the plane ofthe mould plate, and an upper and outer position.

In order to form a central cavity in the wall the mould is provided with a core I I the ends of which are attached to and supported by the legs I. The ends [2 of the sides of this core project through the end frame members I' on either side of the legs 4, while the ends of the side plates 1 also project beyond the end frames as shown, sufficient clearance being left to permit of the necessary upward and outward movement of the mould plates 1 away from their moulding positions.

In the drawing one end of the mould is shown as being closed by means of two small end plates l3, while the other end is shown as being closed by means of a full-sized end plate 14. 'For attachingthe lower ends of these plates to the end frames I the lower ends of the legs'3 and 4 of the latter are formed with projecting lugs l5to whichsmall upwardly-projecting plates l6 are attached by .means, for example, ofscrews; i7. I

:Theselugs I5 andplates l6 together form reeessesjn which laterally-projecting pins I8 pro- 4 vided on the lower ends of the end plates 13 can engage. The parts [9, which may be cast or otherwise formed integrally with the remainder of the end plates l3, serve to strengthen the latter and also to carry the pins I8.

The upper parts 29 of the plates l3 are offset outwardly with respect to the main portions of the plates so that when the parts 26 are fitted against the outsides of the end frames l, as shown, the inner surfacesof the main portions of the plates it are substantially flush with the inner surfaces of the frames I.

In order to secure its upper end each of the end plates i3 is provided with a U-shaped clip 2!, the main portion 22 of which is slidably attached to the part 26 by means of a plate 23 which is fastened to the part 2t by means of screws or rivets 24 passing through a slot 25 formed in the clip. At its lower end the portion 22 of the clip is bent or rolled outwardly, preferably round a pin or rod 26, so as to form a handle by means of which the clip can easily be operated. I

When the clip is in its lower position as shown its downwardly-turned upper lip 21 hooks over the cross part 2 of the end frame I and thus secures the top of the end plate to the frame. It also holds an inwardly-projecting stud (not shown) provided on the end plate engaged in a hole formed in the cross part 2 of the end frame I. These holes are not visible in the left-hand end frame of the drawing, but they correspond in position to the holes 23 in the right-hand end frame. To remove one of the end plates 13 the appropriate clip 2| is moved upwardly to disengage its lip 21 from the end frame, after which the top or the end plate is swung outwardly so as to disengage the aforesaid stud from the hole in the cross part 2. The end plate can then be lifted so as to disengage the pins l8 from the re cesses at the feet of the legs 3 and 4.

The double end plate l4 consists in effect of two plates it which are connected together at their upper and lower ends. Thus the plate [4 includes two main portions 29 which are connected together at their upper ends by means of a single top part corresponding to the parts 29. At their lower ends the portions 29, which are shaped similarly to the corresponding parts of the individual plates l3, are connected together by providing a single continuous pin instead of the two separate central pins [8. The plate I4 is provided with a single sliding clip 30 which takes the place of the two clips-2|.

It will thus be seen that the single end plate [4 fulfills the same functions as the two separate plates H3. The use of a single end plate will generally be preferred for normal use. The provision of the two small plates [3 is, however an advantage in certain cases when it may be required to close only one side of the mould, for example, when forming a section of wall against the side of a window or door frame.

The portions 29 of the plate 14 are shown provided with internal ribs 3i which are intended to form grooves in the ends of the wall sections to improve the bonding betweenthe different sec-' tions. Similar ribs may be provided on the plates l3 or, if desired, the ribs could be omitted entirely from all the plates or they might bereplacedby grooves designed to form projecting ribson the ends of the wall sections.

In the drawing the mould plates 1 are shown in their inner and lower moulding-positions; In these po t on the in s ,8 are ho i ontal and per-,-.

QGtIier -memkier moumea 6n" the (inter face r'eitirig 'facee m ae re'sipeetiva whieh a eve" ea ana-mrauel to thefil'ane dftlie'corjiisttd eleeir the'c'b'rn'eis f or t e members 32.

It "will bef 'seen thlt in the ce'nstriiti'drridesfibeii, in which theface's BS' and 36 of the "retaihing'members 32 and 33"arei eftieal'aiid parallel to the mould plates, the l'attei 'afe con- "strained to move"vertieallyfiiuring the' firs't por-' tibn of their moir'ement' away -from "theif "mouldthe lmlb'unt of *the resistance 7. to the-"opening movement will depend materially 'dntheexa'c' t ai i gles betweenthe faces'i-35 and 36 and ithe directio'n ofthenormal initial movementof themould plates.- If'thefaces Hand 36, instead of'being vertical-,- were-inelinedjnwerdly theg eslstance to the movement 9f the mould .plates wbfild be very are adapted to engage the mould plates (or rather members carried by the latter), in order to resist the upward movement of the plates. These additional retaining members are provided in addition to the retainingmembers already described and are arranged to be operated automatically by the movement of the mould plates and to have a frictional or wedging engagement with the retaining members carried by the mould plates.

In this modification retaining members 42 and 43 having co-operating faces and 46 corresponding to the members 32 and 33 and faces 35 and 36 of Figure 2 are provided, but the tooth portions 44 of the members 43 have their upper portions cut away to form-curved surfaces 41, while retaining arms 48 are provided mounted on the tubes IO carrying the lower pairs of links 8. Each of the retaining arms 48 is formed near its upper end with a curvedtongue49 having an under surface 50 which is adapted to engage the curvedsurface 41. 015 the member 43. The arrangement issuch that, asthe mould plate I is moved downwardly the arms 48 are automatically moved inwardly until the surfaces 50 of the arms engage the surfaces 41 of the members 43. When, however, the mould plate is moved upwardly the arms 48 are swung outwardly clear of the members 43.

The cooperating surfaces 41 and 50 of the members 43 and 48 are so formed as to permit of the movement of the mould plates and to ensure that the engagement between the surfaces is of a frictional or wedging character; As a result of this, any tendency of the mould plates to work upwardly during the filling of the mould is resisted.

I claim: I

l. A mould for'use in forming concrete walls or blocks comprising a mould frame, a pair of mould plates carried by said frame, means movably connecting at least one of said plates with said frame for movement between an inner moulding position and an outer position, the path of the initial part of said movement away from said moulding position being generally parallel to the plane of said plate and said connecting means permitting limited free movement of said plate in a direction normal to the plane thereof under the pressure of the concrete in the mould when said plate is in its moulding position, and a pair of. retaining members one mounted on said mould plate and the other mounted on said frame,;said members beingfreely movable one past the other when said mould is empty butbeing adapted to be pressed towards each other by th pressure of the concrete when the mould isfull, thereby'to resist movement of said niould plate away from its moulding position.

2; A mould as claimed in claim 1, wherein the said retaining members are formed with cooperating faces the planes of which are parallel to the plane of said mould plate when the latter is in its moulding position. 1

' 3. A mould as claimedin'claim 2, wherein the said retaining members are formed with stop faces which abut one against the other when said mould plate is in its moulding position to define said position arid to allow movement ofsaid plate away from this position in one direction only.

4; A mould for use informing co n'crete strum tures comprising a mould frame, at'least one mould ,plate 'm'ea'ns .movably, connecting ,said mould plate, with said framev for upward and outward movement away from its moulding position while permitting to at least part of said plate limitedplay under the pressure of the concrete in the mould when said plate is in its mouldin positiomand a pair of retaining members one mounted on said mould plate and the other mounted on said frame, said members being freely movable one past the other when said mould is empty, but being adapted'to be pressed towards each other by the pressure of the concrete when the mould is full, thereby to resist movement of said mould plate away from its moulding position.

5. A mould as claimed in claim 4, wherein said retaining members are formed with stop portions the engagement between which when said mould plate is in its moulding position defines said position and prevents downward movement of said plate beyond said position.

6. A mould for use in forming concrete sections comprising a mould frame, a pair of side mould plates adapted to form the side faces of the sections, means movably connecting said plates with said frame for upward and outward movement from inner moulding positions, in which said plates are substantially vertical and parallel to each other, and outer positions, the direction of the initial movement of said plates away from said inner positions being substantially vertical and said connecting means permitting limited outward movement of said plates under the pressure of the concrete in the mould when said plates are in said inner positions, and for eachof said plates a pair of retaining members, one mounted on said plate and the other mounted on said frame, said members having cooperating faces which can move freely one past the other when the mould is empty but which are pressed into engagement with each other by the pressure of the concrete when the mould is full to resist movement of the said mould plate away from its said inner position.

7. A mould as claimed in claim 6, wherein the said co-operating faces are parallel to the planes of said mould plates.

8. A mould for use in forming concrete sections comprising a pair of end frames of inverted U-shape having depending legs, means including longitudinal members rigidly connecting said end frames together, a pair of generally vertical side mould plates extending between aid end frames inwardly of said longitudinal members, means including pivotal links connecting said mould plates with said longitudinal members for movement between inner moulding positions in which said links are substantially horizontal and upper and outer positions, stop means preventing down ward movement of said plates past said inner positions, said connecting means allowing limited horizontal movement of said mould plates when in their inner positions under the pressure of the concrete on said plates, and means for retaining said mould plates in their said inner positions comprising for each mould plate at least one pair of retaining members, one'of which members is mounted on said mould plate and the other of which is mounted on a leg of one'of said frames, said members being freely movable one past the other when the mould is empty but being adapted to bepressed into engagement with each other by the pressure of the concrete when the mould is full thereby to resist movement of said mould plate away from it inner position.

9.;Apparatus as claimed in claim 8, wherein tubular members are provided rotatably mounted on said longitudinal members. and wherein said 7 links are rigidly secured to saidrtubular. members.

101A; moulduas."claimedgingclaim 9,.. wherein arr additional. retaining means-is: provided: for eaclri'mould platecomprising an arm: mounted on one of said tubular members'anda (so-operating elementmountedlonsaid mould plate, said arm being operable into frictional engagement with said co-operating elementby the rotation of said tubular member a the mould plate is moved to its inner position.

11. A mould for use in forming concrete sections comprising a mould frame, at least one mould plate, means including pairs of substantially: parallel links connectingsaid mould plate 1 with saidaframe for bodily movement along an arcuate path between an inner moulding position, in which said links are substantially normal to said plate, and an outer position and means retaining said mould plate in said inner position comprising at least one pair of retaining members having co-operating faces, one of said members being mounted on said mould plate and the other being mounted on said mould frame such that when said mould is full the pressure of the concrete on said mould plate produces limited outward movement of the retaining member mounted thereon to press it against the other retaining member to resist movement of said plate away from its inner position, whereas when said mould is empty said members can move freely one past the other to allow said plate to be moved easily from its outer to its inner position.

12. A mould as claimed in claim 11, wherein the co-operating faces of said retaining members are parallel to the plane of said mould plate.

13. A mould for forming concrete sections comprising a frame structure, at least one mould plate for forming a face of the section, means connecting said plate with said frame structure for movement between an inner moulding position and an outer position in which it is clear of said section, a first retaining member carried by said frame structure and a second retaining member actuated by and responsive to the pressure of the concrete in said mold for causing said second retaining member to be actuated by the pressure of said concrete into locking engagement with said first retaining member when the mold is filled to resist movement of said plate away from 0 its molding position, said two retaining members being normally held in position which permits relatively free movement of said plate away from its molding position when said mold is substantially empty;

14. A mould comprising a frame structure, at least one mould plate, means connecting said plate with said frame structure for movement between an inner moulding position and an outer position, a first retaining member mounted on said plate, and a second retaining member mounted on said frame structure in a position to be engaged by the first retainin member so as to resist movement of said plat away from its inner position when the mould is full while permitting free movement of said plate between its said positions when the mould is empty.

15. A mould for use in forming concrete sections comprising a frame structure including a pair of end frames and longitudinal members connecting said frames together, a pair of side mould plates extending between said frames, tubular members rotatably mounted on said longitudinal members, a pair of links secured to each of said tubular members and pivotably connected with one of saidmould plates, -means limiting down- .ment-of said-mould p tes away rom said moulding ,positipna.saidretaining; means includingfior each mould, plateg; a first retaininggmember mounted; on said plate; and fa; Second;- retainin memberpmounteda on. said frame structure ,;such that; when; the. mould is; full-onere-taining member engages. the, other retaininame berutozpmvide: frictional ;.resi's t nom aeainstunwardrmovamentor saidz mouldrfhlatez;awaibfliom sits inner position;;..; I I j 2" 16. A mould for use in forming concrete sections comprising a frame structure including a pair of end frames and longitudinal members connecting said frames together, a pair of side mould plates extending between said frames, tubular members rotatably mounted on said longitudinal members, a pair of links secured to each of said tubular members and pivotably connected with one of said mould plates, means limiting downward movement of said mould plates to define inner moulding positions thereof in which said links are substantially horizontal and perpendicular to the planes of said plates and. retaining means for resisting upward and outward movement of said mould plates away from said mouldin positions, said retaining means including for each mould plate a first retaining member mounted on said plate, a second retaining member mounted on one of said end frames such that when the mould is full the first retaining member is forced by the pressure of the concrete into engagement with the second retaining member to resist upward movement of the mould plate away from its inner position, and a retaining arm mounted on one of said tubular members so as to be moved by the rotation thereof into wedging engagement with the first retaining member when the mould plate is moved to its inner position so as to resist movement of said plate away from said position.

1'7. A mould for use in forming concrete sections comprising a frame structure including a pair of end frames and longitudinal members connecting said frames together, a pair of side mould plates extending between said frames, tubular members rotatably mounted on said longitudinal members, a pair of links secured to each of said tubular members and pivotably connected with one of said mould plates, means limiting downward movement of said mould plates to define inner moulding positions thereof in which said links are substantially horizontal and perpendicular to the planes of said plates and re- 1 taining means for resisting upward and outward movement of said mould plates away from said mouldin positions, said retaining means including for each mould plate a retaining member mounted on said mould plate, and a retaining arm moimted on one of said tubular members so as to be moved by the rotation thereof into wedging engagement with said retaining member when the mould plate is moved to its inner position thereby to resist movement of said plate away from said position.

18. A mould for use in the construction of concrete walls or blocks, comprising a frame structure, at least one mould plate movably carried by said frame structure for movement between an inner moulding position and an outer 11 position and retaining means for holding said mould plate against movements away from its moulding position, said retaining means comprising a pair of members having co-operating faces which members are rigidly mounted one on said frame structure and one on said mould plate, the said face of one of said members being so oriented with respect to the plane of the mould plate and to the direction or the initial movement of said plate away from its moulding position that an internal pressure acting outwardly on said plate tends to force the two said members into engagement with each other to produce a resistance to the initial movement of said mould plate away from its moulding position, whereas when no internal pressure is acting on said mould plate 12 one of said members can move freely past the other said member.

19. In a mold as claimed in claim 13, said first retaining member being held fixed by said frame structure and said second retaining member being carried by said plate.

EUGENE OSULLIVAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,423,461 Scruby et a1. July 18, 1922 1,641,958 Bracey Sept. 13, 1927 

